190-01134-11 GMA 350/350c/350H/350Hc Installation ManualRev. J Page 2-42.3.1.4 Marker Beacon Antenna Cable InstallationThis section provides guidance for terminating the coaxial cable into the D-Sub connector. See the systeminterconnect section for pin assignments.NOTEUse coaxial cable meeting the applicable aviation regulation for the marker beaconantenna. Route the cable to the D-Sub as described in Section 2.3.1.3.When terminating the coaxial cable into the D-Sub observe the following guidance (refer to Figure 2-1):• Keep the distance from the end of the exposed shield to D-Sub as short as possible.• Ensure the distance from the beginning of the exposed shield to D-Sub is no more than1.5 inches long.• Terminate the center conductor by directly connecting it to the D-sub through a crimp pinwithout a pigtail.Figure 2-1 below represents a suggested method for terminating the marker beacon coaxial cable usingM17/128-RG400 terminated into a high density D-Sub connector. Refer to Table 2-1 for Crimp Tool, Pin,and Crimp Tool Insert part numbers.Figure 2-1. GMA Marker Beacon Coaxial Cable D-Sub TerminationTable 2-3. Pin and Crimp Tool Part NumbersCRIMP TOOL PIN CRIMP TOOL INSERTDANIELS MANUFACTUING CORPDMC M22520/2-01 GAGEAFM8 CRIMPING TOOLGarmin Part Number336-00021-00 K42Garmin Part Number336-00044-00 K774